<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1 align="center">标题1</h1>
<h2 align="right">标题2</h2>
<h3>标题3</h3>
<h4>标题4</h4>
<h5>标题5</h5>
<h6>标题6</h6>

<p>段落1</p>
<p>段落2</p>
<p>段落3</p>
</body>
</html>